Rachel Mallalieu, D.O.
NPI 1083629885 · Emergency Medicine Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachel Mallalieu, D.O. is a Emergency Medicine Physician provider in Baltimore, MD (NPI 1083629885).
Provider details
- NPI number
- 1083629885
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- H0064433 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
677 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 222 | $71 |
| Removal of Skin and Tissue, 20.0 Sq Cm Or Less11042 | 158 | $66 |
| Removal of Skin and Tissue, Each Additional 20.0 Sq Cm Or Less11045 | 123 | $28 |
| Management of Oxygen Chamber Therapy99183 | 66 | $115 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 48 | $189 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 42 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Rachel Mallalieu's NPI number?
- Rachel Mallalieu's National Provider Identifier (NPI) is 1083629885, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel Mallalieu's specialty?
- Rachel Mallalieu is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Rachel Mallalieu located?
- Rachel Mallalieu's practice location on file with NPPES is 9000 Franklin Square Dr, Baltimore, MD 21237-3901.
- What is Rachel Mallalieu's phone number?
- The practice phone number listed in the NPPES registry for Rachel Mallalieu is (443) 777-7000.
- Does Rachel Mallalieu accept Medicare?
- Rachel Mallalieu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachel Mallalieu's NPI active?
- Yes — Rachel Mallalieu's NPI (1083629885) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.